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HomeMy WebLinkAboutTract Map 14493 Lot 2 Soils ReportOctober 4, 2023 Project No. 234903-11A Confirmation No. PR 8048 Carmen Huerta & Gia Garcia C/O JC Grading & Excavating 31624 Saddle Ridge Drive Lake Elsinore, CA 92532 Subject: Onsite Wastewater Treatment System Report, Proposed Single-Family Residence, Assessor’s Parcel Number 957-120-017, Located on Jeffrey Heights Road, City of Temecula, Riverside County, California Reference: County of Riverside, Community Health Agency, Department of Environmental Health, Local Agency Management Program for Onsite Wastewater Treatment Systems, 2022. Earth Strata Geotechnical Services, Inc. is pleased to present this onsite wastewater treatment system (OWTS) report for the proposed residential development, referenced above. The purpose of our feasibility study was to determine the percolation rates and physical characteristics of the subsurface earth materials within the vicinity of the proposed leach lines. We have provided guidelines for the design of an onsite wastewater treatment system, where applicable. This evaluation is intended to provide adequate data to satisfy the County of Riverside, Community Health Agency, Department of Environmental Health guidelines for single-family dwelling approval. PROPERTY DESCRIPTION AND LOCATION The subject property is located on Jeffrey Heights Road in the City of Temecula, Riverside County, California (See Figure 1). The subject property consists of an undeveloped parcel of land with relatively gently sloping terrain. Drainage within the subject property generally flows south to an existing drainage channel bordering the southern property boundary. PROPOSED CONSTRUCTION Based on information provided by you, the proposed development includes a four bedroom single family residence, complete with an onsite wastewater treatment system. Earth Strata Geotechnical Services, Inc. Geotechnical, Enviro13:I_?_e_�tfl_l and Materials Testing Consulta_f!_�---���-��--��---��---'' --�---------------�-�--------www.ESGSINC.com (951) 461-4028APPROVED BY CITY OF TEMECULA PUBLIC WORKS david.pina 01/12/2024 01/12/2024 01/12/2024 01/12/20 EARTH STRATA GEOTECHNICAL SERVICES 2 October 4, 2023 Project Number 234903-11A SUBSURFACE EXPLORATION AND PERCOLATION TESTING SUBSURFACE EXPLORATION Subsurface exploration of the subject site consisted of one (1) deep exploratory test hole to a depth of 20 feet, conducted on April 26, 2023. The deep exploratory test hole was excavated to interpret whether groundwater or impermeable soil layers were present. Earth materials encountered within the deep exploratory test hole were classified and logged using the guidelines of ASTM 2487. The approximate location of the deep exploratory test hole is shown on the attached Percolation Location Map, Plate 1. The exploratory log has been included within Appendix A. PERCOLATION TESTING A total of eighteen (18) percolation tests were conducted on April 17, 2023 to evaluate the feasibility of utilizing leach fields for onsite wastewater treatment. The percolation tests were performed in general accordance with the referenced guidelines. The percolation tests were performed at the bottom of 5 feet deep 8- inch diameter tests holes. The exploratory log and locations of the percolation test holes are indicated on the attached Percolation Location Map, Plate 1. The percolation and deep exploratory test holes were located by property boundary measurement on the site plan and by using geographic features. Each percolation test hole was cleaned of loose materials prior to performing the percolation testing. A 5-gallon water container filled with clear water was then inverted and supported over each test hole. Upon percolation of all 5 gallons while the tester was present, testing was conducted on that day. If some of the initial 5 gallons remained while the tester was present, the test was conducted the day after the presoak, but not more than 26 hours after initiating the presoak. Upon completion of the presoak, testing was performed by adjusting the water level to be 6 inches over the gravel for six (6) hours or two (2) hours in the case of sandy soils. The drop in water level was measured from a fixed initial reference point for more reliable readings, with measurements having an accuracy of 0.25-inch. After each measurement the water level was brought up to approximately 6 inches over the top of the gravel. The final percolation test reading is summarized in the following table and the test data recorded in the field is included in Appendix B. EARTH STRATA GEOTECHNICAL SERVICES 3 October 4, 2023 Project Number 234903-11A PERCOLATION TEST SUMMARY TEST NUMBER PERCOLATION HOLE DIAMETER (IN.) HOLE DEPTH (FT.) FINAL PERCOLATION RATE (MPI) EARTH MATERIAL DESCRIPTION P-1 8 5 0 Silty SAND P-2 8 5 0 Silty SAND P-3 8 5 0 Silty SAND P-4 8 5 120 Silty SAND P-5 8 5 120 Silty SAND P-6 8 5 120 Silty SAND P-7 8 5 30 Silty SAND P-8 8 5 30 Silty SAND P-9 8 5 20 Silty SAND P-10 8 5 30 Silty SAND P-11 8 5 30 Silty SAND P-12 8 5 30 Silty SAND P-13 8 4.5 24 Silty SAND P-14 8 4.5 30 Silty SAND P-15 8 4.5 20 Silty SAND P-16 8 5 30 Silty SAND P-17 8 5 20 Silty SAND P-18 8 5 20 Silty SAND EARTH STRATA GEOTECHNICAL SERVICES 4 October 4, 2023 Project Number 234903-11A FINDINGS EARTH MATERIALS A general description of the earth materials observed on site is provided below: • Topsoil (no map symbol): Residual topsoil, encountered in the upper 1 to 3 feet, blankets the site and underlying sedimentary unit. These materials were noted to be generally brown, silty sand which were very porous, moist and in a loose state. • Quaternary Pauba Formation (map symbol Qps): Pauba Formation sandstone was generally encountered below the topsoil to the full depth of our exploration. These materials primarily consisted of light brown, fine to medium grained sandstone with varying amounts of silt. These materials were generally noted to be in a moist and moderately hard state. GROUNDWATER Groundwater was not observed within the deep exploratory hole (MW-1) excavated to a depth of 20 feet. PERCOLATION TEST RESULTS The final measured percolation test design rate is 30 minutes per inch (mpi). A loading rate of 65 square feet per 100 gallons will be utilized for the design. CONCLUSIONS AND RECOMMENDATIONS GENERAL Based on the data presented in this report and using the recommendations set forth, it is the judgment of this professional that there is sufficient area on the lot to support a primary and expansion OWTS that will meet the current standards of the Department of Environmental Health and the Regional Water Quality Control Board (RWQCB). The design system shall be located in natural undisturbed soil at the depth of the tests performed. The natural occurring body of minerals and organic matter at the proposed wastewater disposal area contains earthen materials having more than 50% of its volume composed of particles smaller than 0.08 inches (2mm) in size. The septic system should be installed in accordance with the approved layout. Earth Strata should be contacted for final inspection and approval of the system installation. Based on the data presented in this report and the testing information accumulated, it is the judgment of this professional that the groundwater table will not encroach within the current allowable limit set forth by County and State requirements. SEWAGE DISPOSAL DESIGN RECOMMENDATIONS The proposed sewage disposal system should consist of leach lines utilizing plastic (polyolefin) Standard Infiltrator® chambers manufactured by Infiltrator® Systems, Inc. The areas for both a primary system and a 100 percent EARTH STRATA GEOTECHNICAL SERVICES 5 October 4, 2023 Project Number 234903-11A expansion system are required. Septic tanks should be located upslope from the leach fields to provide gravity flow from the septic tank to the leach lines. Descriptions of the general design and construction of the wastewater treatment systems is provided below. Septic Tank Capacity: The minimum septic tank capacity is determined, in accordance with the referenced guidelines, by the total fixture count or the total number of bedrooms within the proposed design. Allowable Design Percolation Rate: To determine the approximate square footage of each leaching area, the individual percolation rate test for each area that meet the requirements may be used as a guideline. Primary System: Primary systems consist of a 2,000 gallon septic tank, a 1,000 gallon pump chamber, and leach field composed of subsurface leach lines. The minimum leach field absorption area is based upon the proposed septic tank capacity and the percolation rate of the proposed leach field area. The dimensions for individual leach field absorption areas are based on the total trench bottom area only and the areas between the leach line trenches are not included. In addition, the total linear footage can be reduced by 20 percent for designs utilizing plastic Infiltrator® chambers, as long as each line is of equal length. Trench Width, Depth, and Minimum Soil Cover: For leach field areas having a slope of 10 percent, a minimum soil cover of 1½ feet over the leach lines is required. This soil cover is required to maintain a 15 feet minimum horizontal distance from the slope face to any portion of the leach lines. In order to provide a ±1½ foot soil cover, the trenches should be excavated to a depth on the order of 3 to 3½ feet below the surface. It should be noted that the required depth of cover is greater for those areas where the slope is steeper than 10 percent. Individual leach line trenches should be excavated along the contours of the property which will maintain approximately the same elevation at the top of the trench. The leach line trench should be 36 inches wide, with a minimum center to center spacing of 7 feet, respectively. TANK SIZE (gal) DESIGN RATE (mpi) MIN FT²/100 GALLONS MIN SQUARE FEET MIN LINEAR FEET REDUCED BY 20% (feet) TOTAL LENGTH OF LINES (feet) 2000 30 65 1300 433 86 347 As a result, the recommended leach field design consists of three hundred forty-seven (347) feet long leach lines with Infiltrator® chambers per line for both the primary and expansion system disposal areas. The proposed location for each system shall provide sufficient areas for both primary and 100% expansion. 100 Percent Expansion System: Sufficient area must be set aside for future construction of a backup system of equal size in the event the primary system fails. The area required for the 100 percent expansion system is identical to that of the primary system. ADDITIONAL DESIGN CONSIDERATIONS AND RECOMMENDATIONS To encourage the maximum loss of sewage effluent through evaporation and transpiration, the leach lines should be installed at the recommended depth and as close to the ground surface as possible. As noted above, leach lines should also be installed within trenches excavated along ground contours of equal elevation to maintain a relatively EARTH STRATA GEOTECHNICAL SERVICES 6 October 4, 2023 Project Number 234903-11A consistent trench depth. The minimum center to center spacing between the leach line trenches is 7 feet for 36-inch wide trenches. Backfill materials placed over the leach lines should not be compacted but slightly mounded to allow for settlement and to minimize infiltration of surface water. To prevent collapse or crushing of the chambers, cobbles and boulders should be removed from the backfill soils over the plastic Infiltrator® chambers. A minimum horizontal clearance of 5 feet is required between the leach lines and property lines. A minimum horizontal clearance of 5 feet is also required between the septic tank and proposed structures. A minimum horizontal clearance of 8 feet is required between the leach lines and proposed structures. In the event that future access to the 100 percent expansion area is compromised by development (ie., garden walls, etc.), consideration should be given to constructing the expansion system at the same time as the primary system. If the systems are not constructed concurrently, consideration should be given to accessibility of the 100 percent expansion area after all site improvements are constructed. The leach line trenches should be observed by the geotechnical consultant during and after excavation, as well as before the placement of perforated pipe or plastic Infiltrator® chambers. The site observations are to verify the suitability of the exposed earth materials. Necessary revisions or modifications may be needed if unforeseen conditions exposed during construction, such as hard impermeable rock. Revisions could include adding additional lines or a redesign of the system that conforms to the site conditions. The leach field areas should not be used for recreation, horse corrals or other uses that would compact the earth materials at the surface. The ground surface over the disposal areas should be seeded or sodded to mitigate erosion. The property owners should take note that proper use and maintenance are crucial to extending the effective design life of the sewage disposal system. The use of excessive water, introduction of detergents or chemicals, and solid food waste from garbage disposals can cause premature system failures. Properly maintained sewage disposal systems can function for many years. However, a rest period of roughly 10 to 15 years is generally needed to promote bacterial decay and a chance to dry up. After this resting period, the primary system can often be reactivated and alternated with the 100 percent expansion system. GRADING PLAN REVIEW AND CONSTRUCTION SERVICES This report has been prepared for the exclusive use of Joey Comparan and their authorized representative. It likely does not contain sufficient information for other parties or other uses. Earth-Strata should be engaged to review the final design plans and specifications prior to construction. This is to verify that the recommendations contained in this report have been properly incorporated into the project plans and specifications. Should Earth-Strata not be accorded the opportunity to review the project plans and specifications, we are not responsibility for misinterpretation of our recommendations. Earth-Strata should be retained to provide observations during construction to validate this report. In order to allow for design changes in the event that the subsurface conditions differ from those anticipated prior to construction. Earth-Strata should review any changes in the project and modify and approve in writing the conclusions and recommendations of this report. This report and the drawings contained within are intended for design input purposes only and are not intended to act as construction drawings or specifications. In the event that conditions encountered during grading or construction operations appear to be different than those indicated in this report, this office should be notified immediately, as revisions may be required. FIGURE 1 VICINITY MAP N PROPOSED SINGLE FAMILY RESIDENCE 213607-14A VICINITY MAP MAR 2021 FIGURE 1 SEE BAR SCALE Geotechnical, Environmental and Materials Testing Consultants www.ESGSINC.com (951) 397-8315 Earth Strata Geotechnical Services, Inc. 213607-14A APPROXIMATE SITE LOCATION APPENDIX A EXPLORATORY LOGS Project Name: Jeffery Heights Road Logged By: HR Type of Rig: Mini Ex Hole Location: See Geotechnical Map 42184 Remington Avenue, Temecula, CA 92590 30 25 No Groundwater Total Depth 20 feet Pipe inserted to 19 feet 20 sandy clay, light brown (7.5YR, 6/3), stiff, fine to medium sand15 10 fine to medium sand5Silty sand, light brown (7.5YR, 6/3), very moist, moderately hard Quaternary Pauba Formation (Qps) SM Silty SAND, brown, moist, loose, fine to coarse sand MATERIAL DESCRIPTION 0 Topsoil Top of Hole Elevation (ft): See Map D e p t h ( f t ) B l o w C o u n t P e r Fo o t S a m p l e D e p t h D r y D e n s i t y ( p c f ) M o i s t u r e ( % ) C l a s s i f i c a t i o n Sy m b o l Geotechnical Monitoring Well Log MW-1 Date: 4/26/2023 Page: 1 of 1 Project Number: 234903-10A Drilling Company: Drilling It APPENDIX B PERCOLATION TEST RESULTS PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-1 Depth 5 Test No.P-2 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 9:00 9:019:30 9:319:30 9:3110:00 10:0110:00 10:0110:30 10:3110:30 10:3111:00 11:0111:00 11:0111:30 11:3111:30 11:3112:00 12:01 Test No.P-3 Depth 5 Test No.P-4 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 9:02 9:039:32 9:339:32 9:3310:02 10:0310:02 10:0310:32 10:3310:32 10:3311:02 11:03 11 0.5 60.030130.8 40.0 30 11.75 12.5 0.8 40.0 30 10 10.5 0.5 60.0 30 12.5 12 0.5 60.0 30 10.5 30 13 13.25 0.3 120.0 30 11.25 12.25 30 12.75 13 0.3 120.0 11 0.3 120.010.75 30 11 11.25 0.3 120.0 30 30 13.25 13.25 0.0 30 11.25 11.5 0.3 120.0 30 11.5 11.5 0.0 11.25 0.0 30 11.5 11.5 0.0 30 11.5 30 12.25 30 10.5 10.75 0.3 12.5 1.0 30.0120.0 30 11 11.25 0.3 120.0 12.5 0.3 120.0 0.3 120.0 30 12 12.5 0.5 60.0 30 12.5 12.75 Jeffrey Heights Road 4/17/2023 234903-11A JMR PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-5 Depth 5 Test No.P-6 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 9:04 9:059:34 9:359:34 9:3510:04 10:0510:04 10:0510:34 10:3510:34 10:3511:04 11:0511:0511:35 Test No.Depth Test No.Depth Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 12.5 0.5 60.0 Jeffrey Heights Road 234903-11A 4/17/2023 JMR 30 12.5 12.75 0.3 120.0 30 12 30 11.5 12 0.5 60.03012 120.03012.75 12.75 0.0 12.5 0.5 60.0 0.5 60.0301313.25 0.3 120.0 30 12.5 13 30 12.25 12 0.3 30 12.75 13 0.3 120.0 PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-7 Depth 5 Test No.P-8 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:48 10:4811:18 11:1811:18 11:1811:48 11:4811:48 11:4812:18 12:1812:18 12:1812:48 12:4812:48 12:4813:18 13:181:18 1:181:48 1:481:48 1:482:18 2:182:18 2:182:48 2:482:48 2:483:18 3:183:18 3:183:48 3:483:48 3:484:18 4:184:18 4:184:48 4:48 Test No.P-9 Depth 5 Test No.P-10 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:50 10:5111:20 11:2111:20 11:2111:50 11:5111:50 11:5112:20 12:2112:20 12:2112:50 12:5112:50 12:5113:20 13:211:20 1:211:50 1:511:50 1:512:20 2:212:20 2:212:50 2:512:50 2:513:20 3:213:20 3:213:50 3:513:50 3:514:20 4:214:20 4:214:50 4:51 35.75 1.75 17.23035.5 1.50 20.0 30 36.5 38.75 2.25 13.4 30 36.5 38.5 2.00 15.0 31 1.00 30.03031.5 33 1.50 20.0 30 30 30 35.5 37 1.50 20.0 30 34 30 35 36 1.00 30.0 30 34.25 34 30 34 35 1.00 30.0 35.75 1.75 17.234 30 33 34.25 1.25 24.0 30 30 32 33 1.00 30.0 30 33 34 1.00 30.0 30 31.5 32.5 1.00 30.0 30 30.5 31.5 1.00 30.0 30 31 32 1.00 30.0 30 32.5 33.5 1.00 30.0 20.0 30 30 32 2.00 15.0 30 2 34 32.00 1.0 35.5 1.25 24.0 30 33 34 1.00 30.0 30 34 35 1.00 30.0 30 31.5 33 1.50 20.0 30 36 30 31 30 29 30 31 30 30 31.5 1.50 20.0 30 35 38 3.00 38.5 2.50 12.010.0 30 34 35.75 1.75 17.2 33 2.00 15.0 30 34 35.5 1.50 1.00 30.0 32 1.00 30.0 30 30 31 30 32 33 1.00 30.0 30 1.00 30.0 30 35 37.5 2.50 12.0 30 33 34 1.00 30 33 34 30 30 31.5 1.50 20.0 30 32 33 1.00 30.0 1.00 30.0 30 30 31 1.00 30.0 30 34 35 1.00 30.0 30.0 30 32.5 33.5 1.00 30.0 30 33.5 34.5 1.00 30.0 30 31.5 33 1.50 20.0 30 33 34.5 1.50 20.0 30 32 33 1.00 30.0303031.5 1.50 20.0 Jeffrey Heights Road 4/17/2023 234903-11A JMR 30 33 34 1.00 30.0 30 31 32 1.00 30.0 PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-11 Depth 5 Test No.P-12 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:52 10:5311:22 11:2311:22 11:2311:52 11:5311:52 11:5312:22 12:2312:22 12:2312:52 12:5312:52 12:5313:22 13:231:22 1:231:52 1:531:52 1:532:22 2:232:22 2:232:52 2:532:52 2:533:22 3:233:22 3:233:52 3:533:52 3:534:22 4:234:22 4:234:52 4:53 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 35 1.50 20.0 Jeffrey Heights Road 234903-11A 4/17/2023 JMR 30 33 34.5 1.50 20.0 30 34 30 36 38 2.00 15.03033.5 20.0302930.25 1.25 24.0 35.5 1.50 20.0 1.25 24.0 30 31.5 32.75 1.25 24.0 30 30.25 31.5 1.25 24.0 30 35 36.25 30 35.5 37 1.50 30 29 30.25 1.25 24.0 30 30 32 33.25 1.25 24.0 30 30.25 31.5 1.25 24.0 30 34.5 35.5 33.25 34.5 1.25 24.0 1.00 30.0 1.00 30.0 30 28 29 1.00 30.0 30 31.5 32.75 1.25 24.0 30 32 33 30 29 30 1.00 30.0 30 30 33 34 1.00 30.0 32 33 1.00 30.0 1.00 30.0 1.00 30.03031321.00 30.0 30 34 35 30 30 31 1.00 30.0 30 33 34 PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-13 Depth 4.5 Test No.P-14 Depth 4.5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:25 10:2610:55 10:5610:56 10:5711:26 11:2711:27 11:2811:57 11:5811:58 11:5912:28 12:2912:29 12:3012:59 13:0013:00 13:0113:30 13:3113:31 13:3214:01 14:0214:02 14:0314:32 14:3314:33 14:3415:03 15:0415:04 15:0515:34 15:3515:35 15:3616:05 16:0616:06 16:0716:36 16:37 Test No.P-15 Depth 4.5 Test No.P-16 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:27 10:2810:57 10:5810:58 10:5911:28 11:2911:29 11:3011:59 12:0012:00 12:0112:30 12:3112:31 12:3213:01 13:0213:02 13:0313:32 13:3313:33 13:3414:03 14:0414:04 14:0514:34 14:3514:35 14:3615:05 15:0615:06 15:0715:36 15:3715:37 15:3816:07 16:0816:08 16:0916:38 16:39 Jeffrey Heights, Temecula 4/17/2023 234903-11A JMR 30 28 29 1.0 30.0 30 26 27 1.0 30.0 30 27 28 1.0 30.03029312.0 15.0 30 31 32.5 1.5 20.0 30 27 29 2.0 15.0 30 31 32 1.0 30.0 30 27 28 1.0 30.0 30 27.25 28.5 1.3 24.0 30 30 31 1.0 30.0 30.0 1.0 30.0 1.0 30.0 30 28 30 2.0 15.0 30 28 29 30 28 29 1.0 30.0 29 1.0 30.0 30 28 29.5 1.5 20.0 30 29 30 1.0 30 27 28 1.0 30.0 28 1.0 30.0 30 29 3012.0 30 30 33.5 3.5 30.75 1.8 17.28.6 30 29 31.75 2.8 11.0 31 1.5 20.0 30 32.5 35 2.5 30 27 28 1.0 30.0 30 31.5 33.5 2.0 15.0 30 29 30 29.5 30 28 30 27 30 29 31.5 2.5 30.5 1.0 30.0 30 30.5 31.5 1.0 30.0 12.0 30 31.75 34.25 2.5 12.0 30 30 32.5 2.5 12.0 30 29.25 30.5 1.3 24.0 30 28 29.25 1.3 24.0 30 28.5 29.75 1.3 24.0 30 26 27.25 1.3 24.0 30 25 26.5 1.5 20.0 30 26.5 28 1.5 20.0 33 1.5 20.031.5 30 28.5 29.5 1.0 30.0 303028.5 30.5 2.0 15.0 30 30 30 27 28.5 1.5 20.0 30 29.5 26 30 25 27 2.0 15.0 30 1.0 30.03030322.0 15.0 30 29 31.5 1.5 20.03028.5 2.5 12.0 30 28 30.5 2.5 12.0 30 32 34 2.0 15.0 PROJECT NAME PROJECT NO.:TEST TYPE (SP)(LL)(ATU) DATE TESTED:TRACT:LOT NO.: TESTED BY: Test No.P-17 Depth 5 Test No.P-18 Depth 5 Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 10:29 10:3010:59 11:0011:00 11:0111:30 11:3111:31 11:3212:01 12:0212:02 12:0312:32 12:3312:33 12:3413:03 13:0413:04 13:0513:34 13:3513:35 13:3614:05 14:0614:06 14:0714:36 14:3714:37 14:3815:07 15:0815:08 15:0915:38 15:3915:39 15:4016:09 16:1016:10 16:1116:40 16:41 Test No.Depth Test No.Depth Time Time Interval Initial Final Drop MPI Time Time Interval Initial Final Drop MPI 0 ---0 0 0 --- --- --- 0 --- 0 ---0 0 --- 0 ---0 0 0 --- --- --- --- 0 --- 0 ---0 0 --- --- --- --- ---0 0 --- 0 ---0 0 --- 0 0 ---0 --- 30 31.5 33 1.5 20.0 30 32 33.5 30 30 31.5 1.5 20.0 30 30.5 32 30 30 27.5 29 1.5 20.0 29 30.5 1.5 20.0 1.5 20.0 1.5 20.0 30 29.75 31.5 1.8 17.2 30 28 29.75 1.8 17.2 30 26 27.5 30 31.5 33 1.5 20.0 29 30.5 27 29 2.0 15.0 1.5 20.0 1.5 20.0 30 29 31 2.0 15.0 30 30 31 33 2.0 15.0 30 31 32.75 1.8 17.2 30 2.0 15.0 30 32 33.75 1.8 17.2 30 30 32 2.0 15.0 30 29 31 30 27 29 2.0 15.03033352.0 15.0 33 3.0 10.03031332.0 15.0 30 30 30 29 32.25 3.3 9.33033363.0 10.0 Jeffrey Heights, Temecula 234903-11A 4/17/2023 JMR MW-1 AVOID AREA FAILED TESTS 4 3 2 1 5 P-12P-11P-10P-9P-8P-1 P-1 P-3 P-2 P-6 P-5 P-4 P-13 P-15 P-16 P-18 P-17 P-14 APPROXIMATE LOCATION OF WATER LINE TO BE REMOVED AND REROUTED APPROXIMATE LOCATION OF ELECTRICAL LINE TO BE REMOVED AND REROUTED -Limits of Report -Percolation Monitoring Well Location -Primary Leach Lines -100% Expansion Leach Lines MW-1 -Percolation Test Location LEGEND Locations are Approximate Symbols 1.2000 GALLON SEPTIC TANK 2.1000 GALLON PUMP CHAMBER 3.DISTRIBUTION BOX WITH BAFFLE 4.PRIMARY LEACH LINES 5.100% EXPANSION AREA NOTES: ·2000 GALLON ·DESIGN RATE = 30 MPI ·LOADING RATE = 65 SQFT/ 100 GALLONS/ DAY ·TOTAL LENGTH = 433 FEET ·INFILTRATION CHAMBER (20% REDUCTION) = 347 FEET ·PRIMARY: 4 LINES @ 87 FEET LONG (INFILTRATION CHAMBERS) ·100% EXPANSION: 4 LINES @ 87 FEET LONG (INFILTRATION CHAMBERS) P-18 Geotechnical, Environmental and Materials Testing Consultants www.ESGSINC.com (951) 397-8315 Earth Strata Geotechnical Services, Inc. 0 20 40 80 SCALE: 1" = 40' NORTH PROJECT CLIENT PROJECT NO. SCALE DATE DRAWN BY DWG XREFS REVISION PLATE PROPOSED SINGLE FAMILY RESIDENCE MR. JOEY COMPARAN 234903-11A OCTOBER 2023 1" = 40' 1 OF 1 PERCOLATION MAP LOCATED ON JEFFREY HEIGHTS ROAD CITY OF TEMECULA, RIVERSIDE COUNTY, CALIFORNIA APN 957-120-017 JDG